Adobe Illustrator 2024 (version 28.0 and later) officially requires macOS Big Sur (11.0) or newer . You cannot install the latest Illustrator on Catalina.
I can provide the exact troubleshooting steps or settings configuration for your layout. Share public link adobe illustrator macos catalina
macOS Catalina introduced stricter privacy controls. Unlike previous OS versions, applications must request permission to access the Desktop, Documents, and Downloads folders, as well as removable drives. Adobe Illustrator 2024 (version 28
Use to create a new APFS volume on your hard drive. Share public link macOS Catalina introduced stricter privacy
The root of the problem lies in Apple's architectural shift with macOS Catalina. For the first time, Apple's operating system , requiring all software to be 64-bit. While many of Adobe's core applications were 64-bit, older licensing installers and components remained 32-bit, causing legacy versions like CS6 to fail completely.
When Apple released in October 2019, it marked a seismic shift for creative professionals. By dropping support for 32-bit applications and introducing strict new security protocols, Catalina turned the Mac ecosystem upside down. For designers relying on Adobe Illustrator , this transition was particularly nerve-wracking.